Spoilers

I returned to Corann to try and give him another Backplate for more armor, but he would not take it. I spoke to his mother Ronan (Both are in Port in house in K6) and she was angry at me. She want me to get him out of his shell now. I then spoke to Mine Konte (Port - D7) who started to argue with Panana about Shell Bugs being in Quadav Backplates.

This is as far as I've gotten, as I did not see Shell Bugs in the Auction House. Does anyone know where to find them? I believe they are key to this second part of the quest.